Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Sneezing All of a Sudden? 6 Vet-Reviewed Reasons

tabby cat sneezing

Has your beloved feline friend suddenly started sneezing as if there’s no tomorrow? Cats sneeze for various reasons. Your kitty could have gotten wind of something that is disrupting their delicate sense of smell, or they are allergic to something in their environment. Either way, intermittent sneezes are typically not a major cause for concern unless your pet also starts avoiding food, losing weight, or becoming lethargic.

While benign nasal polyps or a malignant tumor could be underlying causes of spontaneous sneezes, keep reading to discover six common reasons that your cat might be sneezing all of a sudden.

divider cat faces 2 oct 2024

The 6 Possible Reasons Your Cat Is Sneezing All of a Sudden

1. Upper Respiratory Viral Infections

Cat sneezes
Photo Credit: ZlataMarka, Shutterstock

Cats, just like people, can suffer from upper respiratory viral infections. Cats that have recently been adopted from shelters or have been hospitalized and exposed to other cats are particularly susceptible to these infections. The most common culprits include feline herpes virus and feline calicivirus, both of which cause kitties to get stuffy and sneeze.

As a general rule, there’s not much you can do to “cure” a feline upper respiratory viral infection. Your companion’s body will need to do the work; it’s no different from the misery that ensues when you catch a cold and have to deal with a clogged nose and scratchy throat until your body gets into gear and takes care of business. Vaccinating your pet is the best way to prevent respiratory illnesses from developing.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


2. Bacterial Infections

Bacteria can also cause sneezing, nasal discharge, and watery eyes associated with upper respiratory infections. In fact, it’s pretty common for upper respiratory infections to start as common viral issues and then progress into bacterial infections as your cat’s nasal and sinus passages become inflamed. Bacterial infections are often accompanied by fever and may require systemic antibiotics to resolve.

Bacterial dental infections are a common cause of sneezing in cats. Cats with serious dental issues often suffer inflammation that extends into the nasal and sinus cavities, causing sneezing and other signs that often resemble upper respiratory infections.


3. Allergies & Irritants

cat smelling a sunflower
Photo Credit: scarlett1991, Pixabay

Just like humans, cats often sneeze when exposed to substances that irritate delicate nasal and sinus membranes like smoke, perfume, and mold. But some kitties have specific allergies. Cats can be allergic to a particular food or pollen or even something in their cat litter.

Keep in mind, however, that cats are far less likely to sneeze in reaction to allergens than humans. Cats suffering from allergies will typically spend time scratching and licking as well. Kitties with food allergies are notorious for removing large swaths of fur from their abdominal area and back while attempting to relieve the pruritus (itchy feeling) associated with a food allergy.


4. Nasal & Sinus Issues

Your cat can suffer from rhinitis and sinusitis, which are conditions in which the lining of the nasal passages and sinuses end up irritated and inflamed. These often occur as a result of an upper respiratory infection. Common signs include difficulty breathing, snoring, and ocular discharge. Treatment is usually straightforward and often involves basic supportive care, such as nasal washes, antibiotics (or antifungals, depending on what is determined to be the cause), and occasionally, decongestants.


5. Chronic Upper Respiratory Infections

a ginger cat sneezes
Photo Credit: Ihtar, Pixabay

If your cat has repeated sinus infections or upper respiratory illnesses, they can have chronic upper respiratory issues. The signs are often the same as what you see with viral and bacterial infections like rhinitis and sinusitis. Most veterinarians consider a cat’s upper respiratory illness chronic when it lasts for a few months or regularly comes back after treatment. Advanced diagnostics may be needed to isolate the specific pathogen and determine if a longer course or change in antimicrobial is needed to combat the illness, should signs last more than a few weeks.

Cats infected with viruses, such as feline herpes virus, often have relapses, particularly when stressed, so it is best practice to keep them as calm and comfortable as possible at home.


6. Foreign Bodies

Because cats understand the world largely through their sense of smell, they can sometimes get objects stuck in their noses after taking a sniff of a novel plant, person, or object. Blades of grass and other plant matter are usually the biggest culprits. Kitties are generally able to get rid of things like the occasional grass clipping or bits of pollen naturally.

If your cat doesn’t seem to get any relief and the foreign object seems stuck, contact your veterinarian for help. Home remedies can often do more harm than good in these situations. Treatment often requires light sedation to permit the irrigation of your pet’s nasal passages or the removal of the offending object with forceps (possibly with the aid of rhinoscopy). Your veterinarian may prescribe antibiotics to prevent infection and medication to soothe your cat’s irritated nasal passages.

divider cat faces 2 oct 2024

Final Thoughts

Cats can sneeze for a variety of reasons, including allergies and infection. Either way, it’s good to know that cat sneezes aren’t usually a cause for concern as long as your cat’s nose isn’t producing thick yellow or bloody mucus. It’s best to contact your companion’s veterinarian if your cat’s condition doesn’t improve in 1–3 days or if you suspect that your four-footed friend has a foreign object stuck in their nose. Remember that early intervention of a suspected upper respiratory infection is often the best way to prevent it from becoming a larger problem down the road.

Related Reads: 


Featured Image Credit By: Jupiter_79, Pixabay

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Triaditis in Cats: Causes, Signs & Treatments (Vet Answer)

Feline triaditis is a phenomenon that occurs when there are inflammatory diseases affecting three different organs in your cat’s body at once. The...

History of Tuxedo Cats – Taking a Look at Their Past

With their gorgeous black and white coats, tuxedo cats appear ready for a night on the town. Anyone can recognize a tuxedo cat...

Coccidia in Cats: Our Vet Explains the Causes, Signs & Treatment

Coccidiosis is a parasitic disease that affects the intestinal tract and is very common in cats, particularly in kittens under 6 months old....

How to Get a Cat Out of a Tree: 5 Vet-Approved Methods

Some cats seem to have a talent for getting themselves into trouble, and plenty of cats manage to get themselves stuck in trees....

More related

Can a Flea Collar Make a Cat Sick? Vet-Reviewed Risks & Considerations

Flea collars can seem quite convenient, but many of them do not work well. For one thing, some do not have proven ingredients...

Are Heated Cat Beds Safe? Can They Be On All the Time?

Heated cat beds are becoming increasingly popular, but are they safe for cats? The short answer is yes; heated beds are safe, and...

Russian Blue Siamese Mix: Info, Pictures, Care & Traits

The Russian Blue Siamese mix is a rare hybrid breed resulting from pairing a Russian Blue with a Siamese. These gorgeous cats are...

10 Best Foods for Pregnant Cats in 2025 – Reviews & Top Picks

When it comes to feeding a pregnant cat, it’s important to note that pregnant cats need special nutrition—they require extra protein, fat, and...

Keep reading

9 Best Stainless Steel Cat Bowls in 2025 – Reviews & Top Picks

Stainless steel products are a no-brainer in a house full of animals. This material doesn’t stain or scratch. Better yet, it’s naturally resistant to all different types of bacteria. The downside to stainless steel products is that they can be...

cat eating food

Can Cats Eat Scallops? Vet-Approved Facts & FAQ

Cats eating fish and other seafood is a common trope, but you may be wondering if it’s safe for them to have. Scallops are a common and nutritious meal for people, but what about cats? Can cats eat scallops? Is...

Can Cats Eat Scallops

Why Does My Cat Rub Against Things? 6 Vet-Reviewed Reasons

Cats can do certain things that leave us feeling puzzled. One common behavior that cats often engage in is rubbing themselves against people and objects. It is not always entirely clear why cats will do this, but cat behaviorists and...

cat-rubbing-its-face-on-wood

How Do Cats Hunt Birds? Everything You Need to Know!

It’s an age-old relationship—the predator/prey dynamic between cats and birds. Birds are incredibly fluttery creatures that have scattered flight patterns to divert prey. But cats are built for low-to-the-ground hunting, ambushing potential prey. So, cats can severely damage and impact...

cat hunting birds

How Long Do Cats Mourn the Loss of Another Cat? Feline Grieving Explained (Vet-Verified Info)

Humans are not the only beings that experience emotions. Not only can our cats experience a broad spectrum of emotions that humans share, but they also live entirely complicated lives that we don’t understand. When it comes to a cat...

sad calico cat with third eyelid

Do Cats Have Bones in Their Tails? Feline Anatomy Explained (Vet Verified)

A cat’s tail is a fascinating and finely tuned structure adapted for survival in the wild, and yes, it has bones. These are called caudal vertebrae. Long-tailed cats can have anywhere from 19 to 23 bones in their tails. Short-tailed...

tail of a cat on vintage background

Can Cats Get Razor Burn? Vet-Reviewed Care Facts

If you have a cat, there is a good chance that they will need to be shaved at some point in their lives, whether it be for a surgical procedure like getting spayed or neutered, or to treat a wound....

pet grooming at home

8 Vet-Verified Ways to Be an Eco-Friendly Cat Owner in 2024

Owning a pet takes a lot out on the environment. After all, our pets have needs too, and these needs require resources that we must take from the environment. Therefore, if you want to live in balance with the planet...

cat playing with owner